728519231 has 8 divisors (see below), whose sum is σ = 794962128. Its totient is φ = 662112000.

The previous prime is 728519221. The next prime is 728519257. The reversal of 728519231 is 132915827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728519231 - 2¹⁰ = 728518207 is a prime.

It is a super-2 number, since 2×728519231² = 1061480539873662722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728519221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51821 + ... + 64361.

It is an arithmetic number, because the mean of its divisors is an integer number (99370266).

Almost surely, 2^728519231 is an apocalyptic number.

728519231 is a deficient number, since it is larger than the sum of its proper divisors (66442897).

728519231 is a wasteful number, since it uses less digits than its factorization.

728519231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17833.

The product of its digits is 30240, while the sum is 38.

The square root of 728519231 is about 26991.0954020025. The cubic root of 728519231 is about 899.8021091661.

The spelling of 728519231 in words is "seven hundred twenty-eight million, five hundred nineteen thousand, two hundred thirty-one".